I am installing a chev 454/th400 with the stock t-case. I went to the driveline shop to get a smaller drive line to connect the 2 together and the guy didnt want to build it for me. He said I needed a slip yolk in the transmission otherwise I'd brake the tailshaft of my trans???? Is this guy just giving me the worst case scenario or should I install a slip yolk in the trans? It dosent come that way stock. What have all you guys running the stock T-case done for a trans/Tcase driveline? I dont have much space for a slip unless I move my T-case back, but I dont really want to do that. My motor just has bolt on's, Truck avenger carb, performer RPM intake/cam and headers.